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A089535
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Semiprimes of the form 2^k + k.
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3
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6, 2059, 8388631, 17179869218, 576460752303423547, 590295810358705651781, 154742504910672534362390615, 39614081257132168796771975263, 664613997892457936451903530140172407, 10633823966279326983230456482242756731, 680564733841876926926749214863536423041
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OFFSET
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1,1
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LINKS
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FORMULA
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MATHEMATICA
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Select[Table[2^k+k, {k, 200}], PrimeOmega[#]==2&] (* Harvey P. Dale, Aug 11 2024 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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